html {
  height: 100%;
}
body {
  align-items: center;
  background: #000;
  display: flex;
  height: 100%;
  justify-content: center;
}
@keyframes grow-and-fade {
  0% {
    opacity: 0;
    transform: scale(0.1) translatez(0);
  }
  40% {
    opacity: 1;
  }
  60% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: scale(1) translatez(0);
  }
}
@keyframes pulsing-fade {
  0% {
    opacity: 0;
  }
  20% {
    opacity: 0;
  }
  40% {
    opacity: 0.8;
  }
  60% {
    opacity: 0;
  }
}
.triangle {
  //animation: grow-and-fade 1000ms linear infinite;
  animation: grow-and-fade 1000ms linear;
  height: 150px;
  left: 0;
  opacity: 0;
  width: 150px;
  position: absolute;
  top: 0%;
  transform: translatez(0);
  transform-origin: 50% 60%;
  will-change: opacity, transform;
}
.triangle-wrapper {
  height: 150px;
  position: relative;
  width: 150px;
}
.triangle-loading {
  //animation: pulsing-fade 5000ms ease infinite;
  animation: pulsing-fade 3000ms ease;
  color: white;
  font-family: 'Helvetica Neue', Helvetica, sans-serif;
  font-size: 12px;
  font-weight: 300;
  left: 50%;
  letter-spacing: 8px;
  margin-left: 40px;
  margin-top: 10px;
  opacity: 0;
  position: absolute;
  top: 100%;
  transform: translate3d(-50%, -50%, 0);
  text-transform: uppercase;
  width:100%;
}
.triangle-svg {
  margin-top: -20px;
  opacity: 0.5;
  overflow: visible;
}
.triangle-polygon {
  stroke-width: 5px;
}
.triangle-1 {
  animation-delay: 0ms;
}
.triangle-1 .triangle-polygon {
  stroke: hotpink;
}
.triangle-2 {
  animation-delay: 200ms;
}
.triangle-2 .triangle-polygon {
  stroke: aqua;
}
.triangle-3 {
  animation-delay: 300ms;
}
.triangle-3 .triangle-polygon {
  stroke: cornflowerblue;
}
.triangle-4 {
  animation-delay: 400ms;
}
.triangle-4 .triangle-polygon {
  stroke: yellow;
}
.triangle-5 {
  animation-delay: 500ms;
}
.triangle-5 .triangle-polygon {
  stroke: white;
}